Molecular weight increase and modification of polycondensates

Details Molecular weight increase and modification of polycondensates Molecular weight increase and modification of polycondensates

C - Chemistry, Metallurgy

08

G

C08G 63/91 (2006.01) C08J 9/04 (2006.01) C08J 11/04 (2006.01) C08K 5/053 (2006.01) C08K 5/092 (2006.01) C08K 5/5317 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2308888

This invention relates to a process for increasing the molecular weight and/or for the modifi-cation of polycondensates during the processing in the melt, which comprises adding to the polycondensate a blend comprising a) at least one polyfunctional anhydride (polyanhydride); b) at least one polyfunctional compound, the functional groups of which can react with the anhydride groups of component a); and c) at least one phosphonate. This invention also relates to the use of an additive blend for increasing the molecular weight and for the modification of polycondensates during the processing in the melt.

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